1996 Dodge Ram 2500 5.9L Cummins diesel

I got this truck from my cousin, nd he knew less about it then I can tell you here.The truck has solid Ford 4x4 axles, hat appears to be about 12" of lift, nd sits on Michelin XML 395/85/r20 "WAR TIRES".
I think the axles are "super duty" 1ton because the pattern is 8 on 170mm, hey're disc breaks all the way around and I think the rear is a 10.5 sterling.
There is no front driveshaft, nd reverse only works when it wants to. The lack of grime on the trans and T-case suggest that have been out recently, ut I haven't found a reman tag yet. By my research it's a 47RE and since all the forward gears work fine it my just be The modulator or even a vacuum line that wasn't replaced when it was reinstalled.The seat has a worn spot on the drivers side. The motor has an ATS Performance kit on it, nd has had some other mods performed. The FSO solenoid has been eliminated in favor of a mechanical cable. There is a toggle switch electric fan. The key still energizes the truck but there is a button to start. 3 A pilar gauges for manifold pressure, rans temp and EGTs. The batteries have been relocated to the bed, nd there is a 16" diameter "Pypes" single stack in there too. I'm sure there's other stuff that I'm not aware of, ut I've only owned it 24hrs.